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v3.19.1

Income Taxes - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Income Tax Expense Benefits [Abstract] |  |
Combined statutory tax rate | 26.50% | 26.50%

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- Definition Income Tax Expense Benefits [abstract] + References No definition available. + Details
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- Definition The applicable income tax rate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2017-01-01 -Paragraph 81 -Subparagraph c -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_81_c_ii&doctype=Standard -URIDate 2017-03-09 + Details
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